Robert Scott wrote:
In the latest Jepp update for Marion, ILL, the procedure has changed
to what looks for all the world like a LOC approach. The minimums for
the ILS have been replaced by ‘NA’, and the DA has been replaced by an
MDA. Yet the title of the approach is still ILS Rwy 20. Why didn’t
they change the name of the procedure to LOC Rwy 20?
-Robert Scott
Ypsilanti, Michigan
(Reply through this forum, not by direct e-mail to me, as automatic reply address is fake.)

When all else fails, check the NOTAMS:

FDC 5/1241 - FI/T WILLIAMSON COUNTY REGIONAL, MARION, IL. ILS RWY 20,
AMDT 11A... S-ILS MINIMUMS NA. DISTANCE FAF TO MAP 4.57 NM. DELETE ALL
REFERENCE TO MM. WIE UNTIL UFN